Make sure you confirm employees before they start work in your household. It is worth the few extra dollars to employ properly, especially if you are in a high profile role.

Billionaire private equity executive Wilbur Ross told the Senate Commerce Committee that when he hired the worker in 2009, the person provided what looked like a valid driver’s license and Social Security card. After Ross was nominated by Trump, he asked all his household staff to provide such documentation again.

“When I was getting ready for this hearing I wanted to recheck all our present and former employees,” Ross said, adding that all but one of about a dozen workers provided the right documentation.

“This one employee was unable to and therefore was terminated,” Ross said. The entire process happened in the last month.

Ross sorted out the matter in advance of the hearing with committee Chairman Sen. John Thune (R-S.D.) and the committee’s top Democrat, Sen. Bill Nelson (Fla.). Both men thanked Ross for being forthcoming about the matter.